Answer:
The IP address is the internet protocol address that is basically assign to every device that is particularly connected to the network of the computer. The internet protocol is basically useful for the communication.
The main function of the IP address is that:
Used in the location addressingFor the network and host interface identification.The IP address is basically distributed by the IANA ( Internet assigned number authority) and the main responsibility of the internet protocol is to distribute the IP address with the help of the RIR (Regional internet registries).
An expression using the conditional operator is called a(n) __________ expression.
Answer: Conditional expression
Explanation: Conditional operators are those operators that are used between two values or variables for the given condition. This operator return an answer after evaluating the condition that can turns out to be true or false .
They also help in increment and decrement of the variable value by one according to condition.Conditional expression are those expression that use conditional operator in their statement for gaining a return value according to the condition being true or false.
What is the difference between a switch and a hub?
Explanation:
A hub is used to send the message from one port to other ports.It does not know the specific address of the destination where the message needs to send.it works on Physical layer of the OSI model(layer 1).
A switch can handle data and it knows the specific address of the destination.A switch works on the data link Layer of the OSI model(layer 2).
BI systems have eliminated a common organizational problem, which is simultaneously having too much data but somehow not enough.
a. True
b. False
Answer:
True
Explanation:
Most of the organization suffers from InfoObesity, i.e., too much data without the proper holding structure for this.
Business intelligence abbreviated as BI plays a major role in the determining the planning strategies of an organizations and serves multiple purposes which includes measurement of performance towards business objectives, quantitative analysis, data reporting and sharing, etc.
BI systems helps in eliminating InfoObesity, by manging the data and filtration of the data with proper data structure to serve specific purposes.
.Name two loaders used in Linux?
Answer:
LOADLIN(Load linux) LILO(Linux Loader).
Explanation:
Loader is a computer program that is used in linux to load linux in the memory.In linux we have to install a special loader while in other operating system we do not need to install the loader it comes in them by default.
The two most common loader in linux are as following:-
LOADLIN(Load Linux).LILO(Linux Loader).. Convert BAC4 from hexadecimal to decimal. Show your work.
Answer:
BAC4₁₆ = 47812₁₀
Explanation:
To convert from hexadecimal base system to decimal base system use this formula:
[tex]N = x_1 * 16^0 + x_2 * 16^1 + x_3 * 16^2 + x_4 * 16^3+ ... + x_n 16^n^-^1[/tex]
, where position of the x₁ is the rightmost digit of the number.
and:
A = 10.B = 11.C = 12.D = 13.E = 14.F = 15.BAC4 = 11*16³+10*16²+C*16¹+4*16⁰ = 45056 + 2560 + 192 + 4 = 47812
What is an E-R diagram?
Answer:
The E-R diagram is basically used in the designing and debugging the relational database in the field of the information system and software engineering.
In the E-R diagram, entity is the object and the component of the data that is used to represent as rectangle.
This E-R diagram is basically used to control the conjunction in the DFD (Data flow diagram). Entities, attribute and action are the three main components that are used in the E-R diagram.
An instance of an abstract class can be created using _____. (Points : 2) the new operator
encapsulation
a public accessor
None of the above
Answer:
The correct answer for the given question is the new operator.
Explanation:
An abstract class is those which have the only declaration of the abstract method, not a definition. Any class which inherits abstract class must define all the method of abstract otherwise it also be abstract.
To declared any abstract class following syntax is used
abstract class class name
{
// abstract method
}
To create an instance of an abstract class we can use a new keyword. The new keyword created the instance of an abstract class.
encapsulation is the feature of object-oriented we cannot create an object by using encapsulation so this option is wrong.
The public is an access modifier we cannot create an object by using public keyword so this option is also wrong.
Therefore the correct answer is new.
Discuss why Web services are important to Web development
Answer:
The web services is the software that uses over the internet and also used various standard XML message system.
The web services is basically used in various applications to make the platform and various types of the technologies independent.
The web services play very important role in the web development as, it allow various types of applications to share data and different types of services with each other in the system. It is used in various UNIX applications and java for the communication purpose.
What is ‘validation’?
Talking about models, validation is the process by the model is corroborated and its outputs are compared with experimental results. From validation, it can be seen how quantitative and qualitative accurate the model is, and it can be confirmed model fidelity to the real world.
Residential and business customers are paying different rates for water usage. Residential customers pay $0.005 per gallon for the first 6000 gallons. If the usage is more than 6000 gallons, the rate will be $0.007 per gallon after the first 6000 gallons. Business customers pay $0.006 per gallon for the first 8000 gallons. If the usage is more than 8000 gallons, the rate will be $0.008 per gallon after the first 8000 gallons. For example, a residential customer who has used 9000 gallons will pay $30 for the first 6000 gallons ($0.005 * 6000), plus $21 for the other 3000 gallons ($0.007 * 3000). The total bill will be $51. A business customer who has used 9000 gallons will pay $48 for the first 8000 gallons ($0.006 * 8000), plus $8 for the other 1000 gallons ($0.008 * 1000). The total bill will be $56. Write a program to do the following. Ask the user which type the customer it is and how many gallons of water have been used. Calculate and display the bill.
Answer:
// here is program in Java.
// import package
import java.util.*;
// class definition
class Main
{
// main method of the class
public static void main (String[] args) throws java.lang.Exception
{
try{
// variable
int gall;
double cost=0;
// object to read value from user
Scanner scr=new Scanner(System.in);
// ask user to enter type
System.out.print("Enter customer type (R for residential or B for business ):");
// read type of customer
char t=scr.next().charAt(0);
if(t=='r'||t=='R')
{
System.out.print("enter the number of gallons:");
//read number of gallons
gall=scr.nextInt();
// if number of gallons are less or equal to 6000
if(gall<=6000)
{
// calculate cost
cost=gall*0.007;
// print cost
System.out.println("total cost is: "+cost);
}
else
{
// calculate cost
cost=(6000*0.005)+((gall-6000)*0.007);
// print cost
System.out.println("total cost is: "+cost);
}
}
else if(t=='b'||t=='B')
{
System.out.print("enter the number of gallons:");
//read number of gallons
gall=scr.nextInt();
// if number of gallons are less or equal to 8000
if(gall<=8000)
{
// calculate cost
cost=gall*0.006;
// print cost
System.out.println("total cost is: "+cost);
}
else
{// calculate cost
cost=(8000*0.006)+((gall-8000)*0.008);
// print cost
System.out.println("total cost is: "+cost);
}
}
}catch(Exception ex){
return;}
}
}
Explanation:
Ask user to enter the type of customer and assign it to variable "t" with scanner object.If the customer type is business then read the number of gallons from user and assign it to variable "gall". Then calculate cost of gallons, if gallons are less or equal to 8000 then multiply it with 0.006.And if gallons are greater than 8000, cost for first 8000 will be multiply by 0.006 and for rest gallons multiply with 0.008.Similarly if customer type is residential then for first 6000 gallons cost will be multiply by 0.005 and for rest it will multiply by 0.007. Then print the cost.
Output:
Enter customer type (R for residential or B for business ):r
enter the number of gallons:8000
total cost is: 44.0
What is the effect of block size in cache design?
Answer:
When designing a cache, you have to consider this things:
Delay. Miss rate. Area.If the cache has a bigger block size may have a lower delay, but when miss the miss rate will be costly. If an application has high spatial locality a bigger block size will do well, but programs with poor spatial locality will not because a miss rate will be high and seek time will be expensive.
Final answer:
The block size in cache design determines the amount of data stored in each cache block. It affects cache hit rate and wasted storage space. The optimal block size depends on various factors.
Explanation:
The block size in cache design refers to the amount of data that can be stored in each cache block. It plays a crucial role in determining the cache's performance and efficiency. A larger block size can lead to a lower cache miss rate and higher hit rate, as it allows for more data to be fetched from memory at once. However, a larger block size also results in more wasted storage space, known as internal fragmentation.
For example, let's consider a cache with a block size of 64 bytes. If the processor requests a single 4-byte integer, the cache will still load the entire 64-byte block into the cache. This leads to wasted space and can reduce the effective cache capacity. On the other hand, if the block size is too small, the cache may experience frequent cache misses, as it would need to load more blocks to fetch the required data.
Choosing the optimal block size involves balancing the trade-off between cache hit rate and wasted storage space. Factors like the access pattern of the application, cache associativity, and memory bandwidth also influence the effect of block size on cache performance.
___________ are used when an SQL statement has to be executed multiple times in a Python script.
a
Prepared statements
b
Cursors
c
Connections
d
Queries
Answer: (A) Prepared statement
Explanation:
Prepared statement is basically used in the structured query language (SQL) statement which are basically execute multiple times in the python script.
The prepared statement is typically used in the SQL statement for update and queries. It is used to executed for the similar SQL statement and it has high efficiency.
It basically is in the form of template where the database compile and perform various query optimization.
Think about an internet of things that we are using on our daily life and how it can be hack and what consequences this will be on us.
Answer:
Internet of thing is a generic term given to all the devices that are interconnected via internet. The things are all the devices that we use in out daily lives such as refrigerators, cars, homes ,e.t.c The interconnections of all the things allows better operation and high ease of daily life as the devices are calibrated to our needs hence automatically turn off if we don't use them. As an example the interconnected electric lights in smart homes know weather we are present in home or not and automatically turn off and on depending on our presence.
As an example of Internet of things device consider Smart Homes that use automation to regulate various operations such as lighting, air conditioning and other operations. If an rouge entity gets access to the system and is able to disrupt the operation's we can easily identify the consequences such as no light , no air conditioning among others. Even our access to our own house can be blocked thus making our life miserable.
Answer
responsible I think I wouldn't know
Explanation:
Using a word processor of your choice, write the pseudocode for an application that allows a user to enter the price of an item and computes 10 percent sales tax on the item and prints out for the user the original price and the tax and the total. Remember to declare the class and the main method.
Answer:
// here is pseudo-code and implementation in java.
import java.util.*;
// class definition
class Solution
{
// main method of the class
public static void main (String[] args) throws java.lang.Exception
{
try{
// scanner object to read innput
Scanner s=new Scanner(System.in);
// variables
double item_cost;
System.out.print("Please enter cost of item:");
//read the cost of item
item_cost=s.nextDouble();
// calculate 10% tax on the item
double tax=item_cost*0.1;
// print original cost
System.out.println("original cost of item is: "+item_cost);
// print tax on the item
System.out.println("tax on the item is: "+tax);
// print total cost of item
System.out.println("total cost of item is:"+(item_cost+tax));
}catch(Exception ex){
return;}
}
}
Explanation:
Read the original cost of item from user and assign it to variable "item_cost". Calculate 10% tax on the cost of item and assign it to variable "tax".Print the original cost and tax on item.Then add the cost and tax, this will be the total cost of item and print it.
Output:
Please enter cost of item:125
original cost of item is: 125.0
tax on the item is: 12.5
total cost of item is:137.5
Answer:
#Python
class PriceTax:
def __init__(self): #Main method
self.itemPrice = int(input("Price of your item: "))
self.tax = 0.1
self.total = round(self.tax*self.itemPrice,2)
print("\nOriginal price: ", self.itemPrice)
print("Tax: %d%%" % (self.tax*100))
print("Total: ", self.total)
price = PriceTax()
Explanation:
We define a class called PriceTax with a main method __init__, we asked for the user input and store the int value in an attribute called itemPrice, we define the tax attribute and we calculate the total by multiplying the predefined tax and the item price entered by the user. Finally, we print the original price, the tax, and the total. Note that for this to work we instantiate the class 'PriceTax' first under the variable price.
Is 49 greater than y? Which below is correct?
A) 49 > y
B) 49 >= y
C) 49 < y
D)49 != y
Answer:
49>y
Explanation:
Given objective: Is 49 greater than y?
Among the options:
a) 49 > y => 49 is greater than y
b) 49 >= y => 49 greater than or equal to y
c) 49 <y => 49 is less than y or in other words, y is greater than 49.
d) 49 !=y => 49 is not equal to y.
So the requires solution is represented by (a) namely, 49>y . This can be alternatively read as y<49, that is y is less than 49. The other options do not represent the given requirement as illustrated earlier.
What is the purpose of a mutator?
Answer:
To change the value of private or protected members.
Explanation:
Mutator also known as setters are the member function or method in class that is used to set or change the value of private or protected members. Mutator does not return any values. They are very important in Object Oriented Programming.
With an example in each, describe the use of two basic functions which are known by the "string.h" header file.
Answer:
strcmp(char * A, char * B);
strcat(char * A, char * B)
Explanation:
One of these basic functions is the function strcmp(char * A, char * B).
This functions compares if two strings are equal; If they are, it returns 0. If not, it returns 1;
So, an example:
char A[13] = "Buffalo Bills";
char B[13] = "Buffalo Bills";
if (strcmp(A,B) == 0)
printf("The strings are the same\n);
else
printf("The strings are not the same");
In this case, they are the same.
----------------------
If for example:
char B[13] = "Buffalo Billz"
It would fall in the else, A and B would not be the same strings.
--------------------------
Other function is the strcat(char * A, char * B);
This function takes two strings as an input, and concatenate them to the first.
For example:
char A[15] = "Buffalo";
char B[5] = "Bills";
strcat(A, B);
printf("%s\n", A);
The output is:
Buffalo Bills
Should technology managers strategize technology projects? Why? How?
Answer: Yes, technology projects should be strategized by the manager of technology.
Explanation: It is correct for technology manager to crate technology projects because the manager would be persisting the knowledge about the technology.Without the correct strategy, which is required to accomplish the goal, the technical project cannot be achieved.
The manager can carry out the work with the help of the critical thinking and the knowledge about the technologies that should be used.By analyzing the need of the project ,he/she can plan the right steps of strategy.
Please list the computer data hierarchy from bit to database
Answer:
Data hierarchy is basically define to the data which is organized in the systematic manner. The main concept of the data hierarchy is to check the basic structure of the data. It basically involve the fields records and files for the data organization.
The following is the list of the computer data hierarchy from nit to address are:
1) Bit: It is the smallest unit of the data.
2) Field: The collection of all the characters in the data is known as field.
3) Record: The collection of the different fields is known as records.
4) File: The collection of various types of records in the database is known as file.
Why is exception handling an issue for testers in object-oriented developments?
Answer:
The exception handling occurs when the unexpected events are happened, which basically require special type of processing. The exception handling is the mechanism that mainly handle all type of the exception during the run time process in the system.
In the object oriented programming, the testers face issue during the development as it used for prevent the abnormal node in the program and also it customize the exceptional message in the system.
We basically used the try catch block in the exception handling as, it efficiently handle the difficult situation in the object oriented development.
Which media access method is used by twisted-pair Ethernet networks? (Please select one of the four options)
CSMA/CD
Token passing
CSMA/CA
OFDMA
Answer: CSMA/CD
Explanation:
CSMA/CD (Carrier sense multiple access with collision detection) is the media access that is use by the twisted pair ethernet networks. The CDMA/CD is one of the protocol that is used by the various types of computer ethernet in the network.
The carrier sense multiple access is one of the part of MAC (media access protocol) protocol that is implemented by the multiple ethernet networking in the system.
Twisted-pair Ethernet networks use the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) media access method. This allows devices to detect if the network is free and manage collisions if they occur.
Explanation:The media access method used by twisted-pair Ethernet networks is CSMA/CD (Carrier Sense Multiple Access with Collision Detection). This method allows devices to sense whether the network is free before they send data. If two devices detect that the network is free and start sending data at the same time, a collision occurs. In this situation, the devices stop transmitting for a random length of time before attempting to send the data again.
Learn more about CSMA/CD here:https://brainly.com/question/32413257
#SPJ6
Write a C++ program to read N numbers. Find sum, product, and average of N numbers
Answer:
// here is code in c++
// headers
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables
int n,num;
double sum=0, avg;
long long int prod=1;
cout<<"Enter value of N:";
// read value of N
cin>>n;
cout<<"enter "<<n<<" numbers:";
// read the N numbers
for(int x=0;x<n-1)
{
cin>> num;
// calculate sum of all
sum=sum+num;
calculate product of all
prod=prod*num;
}
// print sum
cout<<"sum of all "<<n<<" numbers is: "<<sum<<endl;
// print product
cout<<"product of all numbers is : "<<prod<<endl;
print average
cout<<"average of all "<<n<<" numbers is: "<<sum/n<<endl;
return 0;
}
Explanation:
Read the value of n from user.Then ask user to enter n numbers. Then calculate sum of all entered number and their product.After this calculate the average of entered number by dividing sum with n.Print sum, product and average of n numbers.
Output:
enter value of N:6
enter 6 numbers:1 2 3 4 5 6
sum of all 6 numbers is: 15
product of all numbers is : 120
average of all 6 numbers is: 2.5
Final answer:
The program starts by asking the user to specify the number of elements (N). The program demonstrates user input, loops, and basic arithmetic operations to achieve the desired output.
Explanation:
A sample C++ program that performs this task is :
#includeWhen a column is added to a table, it is the _____ column in the table. (Points : 2) first
last
second
third
Answer:
last
Explanation:
When a column is added to a table, it gets appended at the end of the table. For example, suppose we have a table called Student with a column 'Name'. Now suppose we want to add another column called class to the table, then the new column will be added at the end of the table. So the new table structure will consist of <Name,Class>.The same procedure will apply for any other added column.
Answer:
The correct answer for the given question is "last ".
Explanation:
When we add a column into the table so the column will add in the last of the table .We can use alter command in SQL to added the column in the table.
The syntax for adding new column into the table is given below .
ALTER TABLE table_name
ADD column_name datatype;
For example
Suppose we have to add the address column into the student table.
ALTER TABLE student
ADD address varchar (50);
This query will add the column in last of the table .
Describe practices that enable software designers to think about using patterns?
Answer:
Firstly, the software designer basically understand the pattern of the system by think with broader perspective. By establish the pattern first design the proper context of the system.
The pattern dependency basically focus on manage the relationship between the different types of the modules. It basically provide the actual guidance which increase the reuse-ability of the module.
We can also extract the given pattern that from the level of the abstraction and lack cohesion modules are basically difficult to maintain.
A bowl contains 20 candies; 15 are chocolate and 5 are vanilla. You select 5 at random. What is the probability that all 5 are chocolate?
Answer: 0.1937
Explanation:
Given : A bowl contains 20 candies; 15 are chocolate and 5 are vanilla.
If we select 5 candies, then the number of ways to select them is given by permutations.
The number of ways to select 5 candies is given by :-
[tex]^{15}P_5=\dfrac{15!}{(15-5)!}=\dfrac{15\times14\times13\times12\times11\times10!}{10!}=360360[/tex]
The number of ways of selecting any 5 candies out of 20:-
[tex]^{20}P_5=\dfrac{20!}{(20-5)!}\\\\=\dfrac{20\times19\times18\times17\times16\times15!}{15!}\\\\=1860480[/tex]
Now, the probability that all 5 are chocolate :-
[tex]=\dfrac{360360}{1860480}=0.193691950464\approx0.1937[/tex]
Hence, the probability that all 5 are chocolate =0.1937
Answer:
A bowl contains 20 candies; 15 are chocolate and 5 are vanilla.
If we select 5 candies, then the number of ways to select them is given by permutations.
The number of ways to select 5 candies is given by :-
^{15}P_5=\dfrac{15!}{(15-5)!}=\dfrac{15\times14\times13\times12\times11\times10!}{10!}=360360
15
P
5
=
(15−5)!
15!
=
10!
15×14×13×12×11×10!
=360360
The number of ways of selecting any 5 candies out of 20:-
\begin{lgathered}^{20}P_5=\dfrac{20!}{(20-5)!}\\\\=\dfrac{20\times19\times18\times17\times16\times15!}{15!}\\\\=1860480\end{lgathered}
20
P
5
=
(20−5)!
20!
=
15!
20×19×18×17×16×15!
=1860480
Now, the probability that all 5 are chocolate :-
=\dfrac{360360}{1860480}=0.193691950464\approx0.1937=
1860480
360360
=0.193691950464≈0.1937
Hence, the probability that all 5 are chocolate
A(n) _____ provides an organization with vision and leadership in the area of business conduct.
Corporate ethics officer
Code of conduct
Code of ethics
Common good practice
Answer: Corporate ethics officer
Explanation:Corporate ethics officer is the officer that is responsible for examining the business conduct of an organization. The duties of the officer includes the looking after the functioning, execution,development and other factors of the business.They follow the leadership to maintain the ethics and polices.
Other options are incorrect because code of conduct and ethics are general codes that can be followed by schools, individual etc and not necessarily by organization.Common good practices is the practicing of the general good habits and conducts. Thus, the correct answer is Corporate ethics officer
Magnetic tapes are a good choice for backups that need to be kept for five or more years.
True
False
Answer:
True.
Explanation:
Magnetic tape is used to store data.It is one of the oldest technology for data storage.It is suitable for high volume data and storing it for long duration.It's cost is also very less.
Magnetic Tapes are well suited for storing data for long duration because of it's durability.It's shelf life is 30-years.
What are CRC cards and use-case scenarios used for in object-oriented analysis and design?
CRC cards and use-case scenarios are crucial tools in object-oriented analysis and design. They involve defining class responsibilities and interactions (CRC) and detailing user-system interactions (use-case scenarios). These tools help construct efficient computer models by identifying patterns and structures within systems.
Understanding CRC Cards
CRC cards are a brainstorming tool used to represent the responsibilities of classes and how they interact with other classes. Each card typically has three sections: the class name, the responsibilities of the class, and the collaborators (other classes) that the class interacts with.
For example, a CRC card for a Library class might look like this:
Class: LibraryResponsibilities: Manage books, Issue loans, Return booksCollaborators: Book, Member, LoanUse-Case Scenarios
Use-case scenarios describe the interactions between a user and a system to achieve a specific goal. These scenarios help in understanding the functional requirements of the system by detailing the sequence of actions and reactions required to complete a given task.
For example, a use-case scenario for borrowing a book might include:
User logs inUser searches for a bookUser requests a loanSystem checks for availabilitySystem issues the loanBoth CRC cards and use-case scenarios provide a structured approach to analyze and design a system, ensuring that all necessary interactions and responsibilities are accounted for.
Perform the following calculations. Make sure the units of the solution are correct.
a.10 Kbps * 3
b.10 Mbps * 3 sec
c.Convert 2400 bits to bytes
Answer:
30 Kbps
30 Mb
300 bytes
Explanation:
a. 10 Kbps * 3 = (10 * 3) Kbps = 30 Kbps [Note: numbers and units are aggregated and processed separately]
b. 10 Mbps * 3 sec = (10 * 3) Mbps * sec = 30 Mbps*s = 30 Mb [Note: numbers and units are aggregated and processed separately]b
c. Byte is a unit of storage in a computer. 1 byte is made up of eight bits, while each bit can be either 0 or 1.
1 byte = 8 bit
=> 1 bit = 1/8 byte
=> 2400 bits = 1/8 * 2400 = 300 bytes
A group of related files is stored in a(n
Answer: Records
Explanation:
A group of the related file is basically stored in a record as record is the collection of the related field.
A record is the object in the database that basically contain one and more than one value.
In the database, the records are also store in the form of table and in table the data are in the form of rows and columns. There is multiple table in the database and each of the table basically contain multiple records.